8086 (amstrad) \ VOGONS

8086 (amstrad)

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First post, by kelp7

Posted on 2007-05-18, 11:30

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Hi,

I've been trying out Dosbox and it looks very good, but a lot of programs that I wrote in the late 80s and early 90s for my Amstrad PC1512 (a 7mhz 8086 ibm-clone) run too fast on Dosbox. I know that Dosbox emulates various CPUs but is there any way I can get it to 'dumb down' to an 8086 7mhz pc? or does anyone know of either an amstrad pc emulator or 8086 emulator?

thanks
ben

Reply 1 of 6, by Qbix

Posted on 2007-05-18, 11:31

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play with the cycles variable (ctrl f11 and ctrl f12)

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Reply 2 of 6, by kelp7

Posted on 2007-05-18, 11:48

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thanks for the reply, i'll give that a go and see what happens...

Reply 3 of 6, by abyss

Posted on 2007-05-18, 22:18

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For those old games make sure your in normal core and cycles=500 and cyclesup should be 100 and know if the games still run to fast use ctrl f11 and if running too slow ctrl f12. I never knew amstrad made an IBM clone.

Reply 4 of 6, by eL_PuSHeR

Posted on 2007-05-18, 23:08

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In fact, AMSTRAD made several PC clones when IBM was too expensive to buy.

PC1512 - CGA or Monochrome. 512KB. 5¼ floppies.

PC1640 - EGA. 640KB. 5¼ floppies (360KB).

PC2086 - VGA (PVGA1A). 3½ floppies (720KB). I had one of these.

And more models I don't recall. Some with 286 and 386SX.

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Reply 5 of 6, by dh4rm4

Posted on 2007-05-18, 23:35

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I had a PC2086 for a short while and my custom made XT clone with NEC V20 was faster, even though the 2086 also had the same 8mhz CPU.

Reply 6 of 6, by kelp7

Posted on 2007-05-19, 11:29

kelp7 Offline

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thanks for all the help. I took the first replier's advice and simply dropped the cycles down to somewhere between 500 to 700.... everything seems to run just fine now, like it used to... 😀

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